Combining Texts

You have chosen 'Changes in Events and Changes in Things' by Arthur N. Prior, 'An Axiomatization of Set Theory' by John von Neumann and 'The Rationality of Science' by W.H. Newton-Smith

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All the ideas for Natural Reality, or select a subheading:
      A. Classical Physics
      B. Modern Physics
      C. Space
      D. Time
      E. Cosmology
      F. Chemistry
      G. Biology